Criminal justice client rehabs are available as being a far better option than incarceration or heavy fines for those who have already been convicted of any sort of alcohol or drug related crime. As an example, someone who has been found guilty of driving under the influence of drugs or alcohol may be eligible for rehabilitation services for problem rather than serving time in jail. The judge might even order the individual receive rehab, either alone or along with other sentencing. First-time offenders in particular will often be given the ability to choose a criminal justice client rehab rather than other sentencing, and it is well-advised that they reap the benefits of it when it is an option. The theory behind criminal justice client rehabs is it is much more efficient and effective to invest effort and time into treatment than enforcement of other consequences. Much research has been carried out to discover how effective this approach is on recidivism rates, i.e. if the criminal justice client returns or not to criminal justice system following treatment. The signs and indicators appear to be quite positive, and criminal justice clients that do take part in rehab have a better chance of remaining out of the system following rehabilitation.